I just received a dedicated run of ChooChoo LH12 belts tailored for the Shockwave clutch -- this popular Outlaw belt is now available in width's from .870"--.890" suited specially for the Shockwave clutch -- 30.00 each or 100.oo for 4 on our spring special thru the month of April.

that's a loaded question -- it all depends on the diameter of the front and rear pulley's and the actual belt width -- that can even extend to how the pulley's are spaced (sheave to sheave) which dictates the ride height of the belt in the pulley -- maybe someone more Shockwave knowledgeable can help on this

I just need longer belts, got my secondary and motor pushed as close together as it will go and the jr race car 78785 which is the longest they have at 9 1/8. I think in total it measures like 33 3/4 in length for the shockwave OD.